3.2 is the Length of y 7.5 is the length of z and the length of x is 12.5
45/81 = .55
Turn this into a percent: .55 x 100
55 percent
Hope this helps!
I believe that the zeros would be -2 and -6, assuming that the first 2 that you wrote in the equation is supposed to be a power to the x.
The answer is, y = -1/3 - 3
It's a conditional probability: (We know that the probability of getting 1 tail or 1 head is equal to 1/2)
Probability ( Tail AND Tail) = 1/2 x 1/2 = 1/4
